Public works and studies, Drilling in tunnels for grouting, anchoring, instrumentation, etc.

Approval of seventy (70) Hellenic Technical Specifications (HTS), the application of which is mandatory in all public works and studies

ELOT TS 1501-12-07-01-00 Drilling in tunnels for grouting, anchoring, instrumentation, etc.

Approval of seventy (70) Hellenic Technical Specifications (HTS), the application of which is mandatory in all public works and studies

ELOT TS 1501-12-07-01-00 Drilling in tunnels for grouting, anchoring, instrumentation, etc.

The operations provided for in this Specification concern the drilling of holes for cement grouting, drainage, research, advance, ventilation, pressure relief, controlled detonation and instrumentation purposes in underground utilities using percussion, rotary - percussion, rotary or, in rare cases, other kinds of equipment (i.e. helical sampler).